In an interview with The Telegraph, the father of one revealed he was secretly battling with his share of problems throughout the course of the band from mental health issues to struggles with addiction.
"[I] wasn’t happy. I went through a real drinking stage, and sometimes you take things too far.”
Liam continues, “Everyone’s been that guy at the party where you’re the only one having fun, and there were points when that was me.”
Towards the end of Liam's time in 1D, he started to receive criticism from the media, fans and haters alike for gaining weight.
Liam admits that his weight gain was a result of his unhealthy lifestyle.
“[I] Got to 13 stone [about 180 pounds], just eating crap. I got fat jibes, and it affects your head,” he admits.
“I have nothing to hide about it. As I say, it was like a musical university. We were pretty reckless, but I got it out of my system. I had my fun.”
Payne also opened up about his mental health battle, explaining how his love of music helped him to overcome his issues.
“We couldn’t go anywhere. It was just gig to hotel, gig to hotel. And you couldn’t sleep, because they’d still be outside,” he says.
“People were speaking to me about mental health in music the other day, and that’s a big issue. Sometimes you just need some sun, or a walk.”
If you or someone you know needs help, you can speak confidentially to a trained counsellor 24 hours a day at headspace.org.au or Kids Helpline: 1800 55 1800.